Hair-cutting device.



1.]. MCDONOUGH.

HAIR CUTTING DEVICE.

ION FILED MAR l7 1 APPLICAT 915- 1 ,1 90, 1 82. Patented July 4, 1916.

u IN! UNITED STATES PATENT oFnroE. v.

JOSEPH J. -McDONOUGH, OF: ROCHESTER, PENNSYLVANIA, ASSIGNOR TO AMERICAN FIRE ALARM COMPANY, 'OF PITTSBURGH, PENNSYLVANIA, A CORPORATION OF DELAWARE.

' HAIR-CUTTING DEVICE.

Patented July 4, 1916.

Application filed March 17, 1915. Serial No. 15,062.

To all whom it may concern."

-Be it known that I, JOSEPH. J. Mo- DONOUGH, a citizen of the United States, residing at Rochester, in the county of Beaver and State of Pennsylvania, have invented certain new and useful Improvements in Hair-Cutting Devices; and I do hereby declare the following to be a full,'cl'ear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to hair-cutt ng devices and the object thereof is to improve the construction and consequent operation of such devices to the end that a person may easilyand effectively cut or trim his own or anothers hair.

In the accompanying sheet of drawings, which forms part of my specification, I have illustrated the preferred embodiment of my invention.

Figure 1 is a side elevation of the complete device; Fig. 2 a top plan view thereof;

Fig. 3 a sectional view taken on the line IIIIII, Fig. 2, the back of the comb being indicated by a dotted line; and Figs. 4 and 5 sectional views taken, respectively, on the lines IVIV and V-V, Fig. 3.

In the practice of my invention I provide a hair comb, and at its side and through the instrumentality of a suitable casing, I yieldingly attach a cutting blade in such a manner that when the device is used for its intended purpose the blade will, because'of the variable cutting resistance, vibrate in the plane of its general extent and parallel to the side of the comb. Also, the attachment of the blade to the comb is preferably such that the blade will vibrate laterally with respect to the side of the comb.

Referring to the embodiment of my invention shown in the drawings, the comb 4 may be of any suitable form. Freferably ablade 7 is placed at each side of the comb, the edge of one blade being slightly in advance of that of the other, as shown in Fig. 4, and the cutting edges being at an angle to the line of the points'of the combs teeth. The casing for the blades comprises a U-shaped resilient member 1, having slots 2 to receive the blades, and a similarly shaped blade-locking member 5, provided with a slot 12, and adapted to be clamped to the first-named member 1 by means of a screw 11 and nut 13. To remove or replace ,the'blades 7 (the nut 13 being loosened), the

member 5 is moved to the dotted line posit1on shown in F1g.3 thus exposing the slots 2 of the member 1 so that the blades may be inserted therein, after which the member 5 is moved to theposition indicated in Figs. 1 and 2 and the nut tightened to clamp the parts together and hold the blades firmly in the casing.

Toeflect the above mentioned vibratory actions of the blades, the casin is secured to the.comb by means of a yiel ing yoke or spring clips 10 which are engaged by the head of the screw 11, and a leaf spring 9, also engaged by the screw 11, projects rearwardly of the blades 7 and bears at its outer end on the back of the comb 4, indicated by a dotted line in Fig. 3. It will be readily observed of this construction, that the blade casing may be slid longitudinally of the comb to anydesired osition, and that the casing may have a roc ing movement on the.

comb, such movement being about the spring clips- 10 as a center and resisted by the spring 9.

When using my improved hair cutting device, it may be held in either hand by grasping the left end of the comb as viewed in-Figs 1 and 2. As the device is moved down through the hair, the variable cutting resistance, which is counteracted by the'spring 9, causes the blades to rock or vibrate parallel with the sides of the comb. The hair is thus cut partly by a direct pull and partly by this chopping action of the blades. Furthermore, this vibrating action also frees the device of a relatively large portion of the cut hair which might otherwise lodge between the blades and the comb. The cut hair that is not removed by such vibratory action may be removed by pressing the rear end of the casing downwardly against the resistance of the spring 9, and for this purpose the member 1 is provided with laterally projecting lugs 8. The ator vibration of the blade, which when the device is in use, is adjacent tothe .persons heady This movemen I find tobe of very material importance eration of devices of this character.

I claim as my invention:

1. In a hair-cutting device, the combina-.

tion of a comb, a casing provided with a blade held at a Side of the comb, a single connector attached to the casing and engaging the comb at a single point thereof and permitting the casing to rock about such point, and a resilient member between the casing and comb for resisting such rocking movement of the casing.

2. In a hair-cutting device the combina: tion of a comb, a casing provided with a pair of spring clips engaging the back of the comb and ermitting a rocking move.- ment of the casing on the comb, a blade carried by said casing at one side of said clips, and a spring secured to the casing and bearing on the back of the comb at the other side of said cli s.

3. In a air-cutting device, the combina tion of a comb, an elongate U-shaped inner casing member provided with a blade, a correspondingly shaped outer casing member movable longitudinally upon and cooperating with said inner member to hold said blade at a side of the comb, spring clips secured to the casing members and engaging the back of the comb, said clips pero the successful opmitting of a rocking movement. of the cas-' ing, and resilientmeans for resisting such rocking movement. I

4. In a hair-cutting device, the combination of a comb, a casing provided with a pair of blades held one on each side of said comb, the cutting edge of one blade being in advance of that of the other, means for pivotally attaching the casing to the comb, and resilient means for holdlng the blades yieldingly toward the toothed edge of the comb. I

5. In a hair-cutting device, the combinat1on of a comb, a-pair of blades disposed one at each side of the comb, a casing comprisin inner and outer elongate members movab e longitudinally of each other and cooperating with each other to hold said blades in said positions, a spring clip within the inner casing member and engaging the back of the comb, a clamping screw engaging said casing member and cli and a spring for holding the'blade-provlded portion of the casing yieldingly toward the toothed edge of the comb.

In testimony whereof I have aflixed my signature in the presence of two witnesses.

\ JOSEPH J. McDONOUGH.

Witnesses:

(I. K. Moons,

Rom. E. BARRY. 

